2014 Annual Report Table of Contents
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Possible Artifacts of Data Biases in the Recent Global Surface Warming Hiatus Thomas R
RESEARCH | REPORTS 75, indicating that C108 is contributing but not 7. R. J. Charlson, J. E. Lovelock, M. O. Andreae, S. G. Warren, 28. S. D. Rokitta et al., J. Phycol. 47, 829–838 (2011). crucial for catalysis. In contrast, mutating cys- Nature 326, 655–661 (1987). 29. U. Alcolombri, M. Elias, A. Vardi, D. S. Tawfik, Proc. Natl. Acad. – teine 265 to alanine resulted in complete loss of 8. P. K. Quinn, T. S. Bates, Nature 480,51–56 (2011). Sci. U.S.A. 111, E2078 E2079 (2014). 9. J. R. Seymour, R. Simó, T. Ahmed, R. Stocker, Science 329, 30. A. M. N. Caruana, G. Malin, Prog. Oceanogr. 120, 410–424 activity (Fig. 4C). These findings are in agree- 342–345 (2010). (2014). ment with b-elimination demanding only one 10. M. S. Savoca, G. A. Nevitt, Proc. Natl. Acad. Sci. U.S.A. 111, 31. J. B. Raina et al., Nature 502, 677–680 (2013). proton abstraction (as opposed to isomerization) 4157–4161 (2014). 32. J. B. Raina, E. A. Dinsdale, B. L. Willis, D. G. Bourne, Trends – andwithC265actingasthecatalyticbase. 11. A. R. Curson, J. D. Todd, M. J. Sullivan, A. W. Johnston, Microbiol. 18, 101 108 (2010). E. huxleyi Alma Nat. Rev. Microbiol. 9, 849–859 (2011). The genome has 7 paralogs ACKNOWLEDGMENTS 16 12. C. R. Reisch, M. A. Moran, W. B. Whitman, Front Microbiol 2, (see the SM) (Fig. 4A) ( ). However, the tran- 172 (2011). We thank S. Albeck for assistance with the gel filtration analysis, scriptome analysis indicates that Alma1 is by far 13. -
A NEW EYE on COASTS Celebrating 2 Award-Winning Years of Eos Magazine and Eos.Org
VOL. 98 NO. 1 JAN 2017 Antarctic Trek for Space Weather Partnering Academia and the Military Earth & Space Science News Whisker-like New Mineral Discovered A NEW EYE ON COASTS Celebrating 2 Award-Winning Years of Eos Magazine and Eos.org Nearly 1 Million Online Readers An International Readership Spanning 196 Countries Multiple Awards from Association TRENDS and Association Media & Publishing VOL. 97 NO. 23 1 DEC 2016 VOL. 96 NO. 4 1 MAR 2015 VOL. 96 NO. 13 15 JUL 2015 Earth & Space Science News Earth & Space Science News HowHowHow Ready ReadyReady is Isis Los Los Angeles Angeles LEARNING Sonar Data forfor thethe NextNext “ GEOSCIENCE from the Water Column “Big OneOne”? Tracking Global ? BY DOING Landslide Hazards ”? Students Launch High-Altitude Balloons Monitoring Colombia’s GEOSCIENCE Slumbering Volcanoes Seismic Hazard Assessment Lab Simulates Science Fares Well in U.S. Solar Eruptions Gender Parity Proposed Federal Budget Magnetic Islands Caterpillar-Like Motion in Space of the Greenland Ice Sheet New for 2017: You’ll receive Eos magazine once a month, and now you’ll enjoy More Content: More features, news, and Research Spotlights More Depth: Special issues on important and emerging topics The satisfaction of a reduced carbon footprint And, as always, you can read articles free online as soon as they are published on Eos.org or by adding Eos.org to mobile apps like SmartNews and Flipboard. Earth & Space Science News Contents JANUARY 2017 PROJECT UPDATE VOLUME 98, ISSUE 1 14 Space Weather from a Southern Point of View A recently completed instrument array monitors geospace from the Antarctic end of Earth’s magnetic field lines. -
Stable Isotope Fingerprinting: a Novel Method for Identifying Plant, Fungal
Ecology, 00(0), 0000, pp. 000–000 Ó 0000 by the Ecological Society of America Stable isotope fingerprinting: a novel method for identifying plant, fungal, or bacterial origins of amino acids 1 THOMAS LARSEN,D.LEE TAYLOR,MARY BETH LEIGH, AND DIANE M. O’BRIEN Institute of Arctic Biology and Department of Biology and Wildlife, University of Alaska, Fairbanks, Alaska 99775-7000 USA Abstract. Amino acids play an important role in ecology as essential nutrients for animals and as currencies in symbiotic associations. Here we present a new approach to tracing the origins of amino acids by identifying unique patterns of carbon isotope signatures generated by amino acid synthesis in plants, fungi, and bacteria (‘‘13C fingerprints’’). We measured 13 amino acid d C from 10 C3 plants, 13 fungi, and 10 bacteria collected and isolated from a boreal forest in interior Alaska, USA, using gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS). Microorganisms were cultured under amino-acid-free conditions and identified based on DNA sequences. Bacteria, fungi, and plants generated consistent, unique 13C fingerprints based on the more complex amino acids (five or more biosynthetic steps) that are classified as essential for animals. Linear discriminant analysis classified all samples correctly with .99% certainty and correctly classified nearly all insect samples from a previous study by diet. Our results suggest that 13C fingerprints of amino acids could provide a powerful in situ assay of the biosynthetic sources of amino acids and a potential new tool for understanding nutritional linkages in food webs. Key words: Alaska, USA; compound-specific stable isotope analysis; d13C; essential amino acids; eukaryotes; gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS); prokaryotes. -
CV Seth Newsome.Pdf
Seth D. Newsome University of New Mexico Associate Professor, Department of Biology Associate Director, Center for Stable Isotopes 190 Castetter Hall Albuquerque, NM 87131 USA [email protected] http://sethnewsome.org Research Interests Animal Ecology, Animal Eco-Physiology, Historical Ecology, Conservation Biology Education 2000–2005 Ph.D., University of California Santa Cruz (Santa Cruz, CA) Earth & Planetary Sciences Department 1995–1999 B.A., Dartmouth College (Hanover, NH) Earth Sciences Department Positions & Professional Development 2018– Associate Professor, Biology Department, University of New Mexico (Albuquerque, NM) 2014– Associate Director, University of New Mexico Center for Stable Isotopes 2013–2018 Assistant Professor, Biology Department, University of New Mexico (Albuquerque, NM) 2009–2012 Post-Doctoral Research Scientist, University of Wyoming (Laramie, WY) Research focused on (1) using compound specific stable isotope analysis to quantify protein routing in mammals, birds and fish; (2) characterizing the ecology of an adaptive radiation in a group of South American songbirds via biochemical, physiological, and genetic tools. Advisors: Drs. Carlos Martinez del Rio and David G. Williams 2006–2009 Post-Doctoral Research Scientist, Carnegie Institution of Washington (Washington, DC) Research focused on (1) development of stable isotope methods to assess ecological niche and eco-physiological variation, foraging specialization, and dispersal characteristics of mammals and birds; (2) human impacts on ecosystem change in Australia and southern California. Advisor: Dr. Marilyn L. Fogel 2000–2005 Ph.D. Candidate, UC-Santa Cruz (Santa Cruz, CA) Research focused on historic and prehistoric ecology of marine mammals, with emphasis on the northern fur seal in the northeast Pacific Ocean. Advisor: Dr. Paul L. Koch 2000 Senior Lab Technician, Lawrence Berkeley National Laboratory (Berkeley, CA) Managed stable isotope facility and conducted research using isotopic tracers to track fluid and contaminant migration through sediments and groundwater. -
Effect of Cover Crop on Carbon Distribution in Size and Density
Article Effect of Cover Crop on Carbon Distribution in Size and Density Separated Soil Aggregates Michael V. Schaefer 1,2 , Nathaniel A. Bogie 3,4 , Daniel Rath 5, Alison R. Marklein 1,6, Abdi Garniwan 1, Thomas Haensel 1, Ying Lin 7, Claudia C. Avila 1 , Peter S. Nico 6, Kate M. Scow 5,8, Eoin L. Brodie 6,9, William J. Riley 6 , Marilyn L. Fogel 7,10, Asmeret Asefaw Berhe 3 , Teamrat A. Ghezzehei 3, Sanjai Parikh 5 , Marco Keiluweit 11 and Samantha C. Ying 1,12,* 1 Department of Environmental Sciences, University of California, Riverside, CA 92521; USA; [email protected] (M.V.S.); [email protected] (A.R.M.); [email protected] (A.G.); [email protected] (T.H.); [email protected] (C.C.A.) 2 Pacific Basin Research Center, Soka University of America, Laguna Hills, CA 92656, USA 3 Environmental System, University of California, Merced, CA 95343, USA; [email protected] (N.A.B.); [email protected] (A.A.B.); [email protected] (T.A.G.) 4 Geology Department, San Jose State University, San Jose, CA 95192, USA 5 Department of Land, Air, and Water Resource, University of California, Davis, CA 95616, USA; [email protected] (D.R.); [email protected] (K.M.S.); [email protected] (S.P.) 6 Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; [email protected] (P.S.N.); [email protected] (E.L.B.); [email protected] (W.J.R.) 7 Environmental Dynamics and GeoEcology Institute, University of California, Riverside, CA 92521, USA; [email protected] (Y.L.); [email protected] (M.L.F.) 8 Agricultural -